The vitamin d test is called twenty five hydroxy vitamin d, or 25(OH)D. 
  Optimal levels are 40-50, though I do not know the unit.  I'm in the 
midwestern USA.  I had it done and it was a simple blood draw, with 
results in 5 days.  I have been taking a good prenatal multi vitamin 
most days for years, and garden outside extensively.  However, because 
of nursling allergies, I do not consume fortified dairy, or really any 
fortified (processed) foods at all.  My level was 30-something in 
mid-summer, so I boosted my supplements.

I realize that many moms we serve are not going to have the resources 
to be tested, but many of those who are concerned about this issue do, 
so we can let them know about the test and let them take it from there. 
  I personally would not feel comfortable recommending the high-end 
supplement amounts to a mom who had not been tested.

Lynn in MO

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